<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    * {
      margin: 0;
      padding: 0;
    }
    .nav {
      height: 40px;
      border-bottom: 1px solid #ccc;
    }
    ul {
      list-style: none;
      width: 1200px;
      margin: 0 auto;
    }

    ul li {
      float: left;
      width: 20%;
      height: 40px;
      border-right: 1px solid #ccc;
      box-sizing: border-box;
      text-align: center;
      line-height: 40px;
    }

    ul .last {
     border-right: none;
    }

    ul li a {
      display: block;
      height: 40px;
      text-decoration: none;
      color: #000;
    }
  </style>
</head>
<body>
  <div class="nav">
    <ul>
      <li><a href="#">我要投资</a></li>
      <li><a href="#">平台介绍</a></li>
      <li><a href="#">新手专区</a></li>
      <li><a href="#" class="app">手机微金所</a></li>
      <li class="last"><a href="#">个人中心</a></li>
    </ul>
  </div>
</body>
</html>